[PATCH] net: ethernet: mtk_eth_soc: Avoid truncating allocation

patchwork-bot+netdevbpf at kernel.org patchwork-bot+netdevbpf at kernel.org
Tue Jan 31 02:10:16 PST 2023


Hello:

This patch was applied to netdev/net.git (master)
by Paolo Abeni <pabeni at redhat.com>:

On Fri, 27 Jan 2023 14:38:54 -0800 you wrote:
> There doesn't appear to be a reason to truncate the allocation used for
> flow_info, so do a full allocation and remove the unused empty struct.
> GCC does not like having a reference to an object that has been
> partially allocated, as bounds checking may become impossible when
> such an object is passed to other code. Seen with GCC 13:
> 
> ../drivers/net/ethernet/mediatek/mtk_ppe.c: In function 'mtk_foe_entry_commit_subflow':
> ../drivers/net/ethernet/mediatek/mtk_ppe.c:623:18: warning: array subscript 'struct mtk_flow_entry[0]' is partly outside array bounds of 'unsigned char[48]' [-Warray-bounds=]
>   623 |         flow_info->l2_data.base_flow = entry;
>       |                  ^~
> 
> [...]

Here is the summary with links:
  - net: ethernet: mtk_eth_soc: Avoid truncating allocation
    https://git.kernel.org/netdev/net/c/f3eceaed9edd

You are awesome, thank you!
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